CN205449505U - Research spraying form and constant volume burner of microcosmic characteristic thereof - Google Patents
Research spraying form and constant volume burner of microcosmic characteristic thereof Download PDFInfo
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- CN205449505U CN205449505U CN201521144616.2U CN201521144616U CN205449505U CN 205449505 U CN205449505 U CN 205449505U CN 201521144616 U CN201521144616 U CN 201521144616U CN 205449505 U CN205449505 U CN 205449505U
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- flange
- atomizer
- constant volume
- combustion chamber
- observation
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Abstract
The utility model discloses a research spraying form and constant volume burner of microcosmic characteristic thereof, including installing at the inside burning body of box, the burning body is provided with the observation hole of four shapes for the through -hole, the axis of observing the hole is all at same horizontal plane, and wherein the angle between two axis of observing holes be 180, and the contained angle between the axis in two other observation holes is 160, install optics observation window on the observation hole, optics observation window comprises port flange, optical glass and glass gland, be provided with the sprayer system directly over the middle part of burning body. The utility model discloses the device can use with the cooperation of multiple modern optical measurements instrument, and then reaches the purpose that can survey the macroscopical form of spraying can measure its microcosmic characteristic again, moreover through setting up synchronization signal, can obtain macroscopical appearance picture and microcosmic information a branch of or the multi beam spraying simultaneously to the realization is to the broken atomizing research further of fuel.
Description
Technical field
This utility model relates to internal combustion engine spraying characteristic research field, specifically, relating to a kind of for observing spraying macroscopic form and measuring the CONSTANT VOLUME MODEL COMBUSTION CHAMBER of spraying microscopic characteristics.
Background technology
In field of internal combustion engine, fuel atomizing process directly affects burning and discharge performance, and then contributes for alleviating the energy and environmental problem.Therefore for internal combustion engine researcher, obtain spray characteristics (the jet crushing length of fuel, spray cone angle, oil droplet size and speed etc.) and with ambient parameters (pressure, temperature, environmental gas kind and density etc.) relation, and then set up fuel atomization reaction mechanism, finally provide basic data for electromotor Spray Simulation and optimization, be the main purpose carrying out oil atomizing research.
In actual internal combustion engine, experimental study to spraying is difficult to carry out, this is because be difficult to the control of spray condition parameter and adjustment to accomplish exactly accurate, and limited by existing measuring instrument, spray discharge pattern and microscopic characteristics thereof are accurately measured the most difficult.Therefore one of conventional nanospray experiment research method is exactly constant volume combustion bomb method.
What existing part CONSTANT VOLUME MODEL COMBUSTION CHAMBER was typically arranged is to be shaped as the observation port of through hole, or four forms all around, and axis is at same level and four observation ports being in vertical distribution.This type of CONSTANT VOLUME MODEL COMBUSTION CHAMBER can only observe the macroscopic properties of spraying through form, and along with the development of existing optical measuring technique, this type of CONSTANT VOLUME MODEL COMBUSTION CHAMBER well can not coordinate with advanced optical measuring apparatus because structure limits, the microscopic characteristics of spraying cannot be studied, and then the synchronization research to the macroscopic form sprayed and microscopic characteristics can not be realized, this is obviously unable to reach requirement of experiment.And this type of CONSTANT VOLUME MODEL COMBUSTION CHAMBER can only be studied for the spraying of a few species fuel, it is impossible to realize the spray characteristics of multiple types fuel is studied.Therefore, what this limitation was serious hinders the research of the broken atomization degree of depth to fuel.
Utility model content
nullTo be solved in the utility model is exactly that existing constant volume combustion bomb physique structure optimizes not，Cause cannot with advanced optical measuring apparatus with the use of，Pluralities of fuel spraying system cannot be applied，Thus cannot effectively synchro measure pluralities of fuel spraying macroscopic form and the technical problem of microscopic characteristics，Provide a kind of CONSTANT VOLUME MODEL COMBUSTION CHAMBER studying spray discharge pattern and microscopic characteristics thereof，This device can coordinate with high-speed motion picture camera，Again can with the various modern optical gauges such as Phase Doppler Particle Analyzer (PDA) and particle image velocimeter (PIV) with the use of，And then reach to observe spraying macroscopic form and can measure again the purpose of its microscopic characteristics，And by arranging synchronizing signal，A branch of or the macro morphology figure of multi beam spraying and microscopic information thereof can be obtained simultaneously，Thus realize the broken atomization of fuel is further studied.In addition can be by changing atomizer flange, it is adaptable to the spraying system structure of pluralities of fuel, it is achieved characteristic research and the contrast to multiple types injected fuel spray.Change the structure that traditional optical sight glass is equivalently-sized simultaneously, be beneficial to improve observed data and the measurement effect of experiment.
The purpose of this utility model is achieved through the following technical solutions:
A kind of CONSTANT VOLUME MODEL COMBUSTION CHAMBER studying spray discharge pattern and microscopic characteristics thereof, including the burning body being arranged on box house, it is filled with the asbestos for insulation between described casing and burning body, described burning body is provided with four observation ports being shaped as through hole, the axis of described observation port is all in same level, angle between the axis of two of which observation port is 180 °, and the angle between the axis of two other observation port is 160 °；Optical observation window is installed on described observation port, described optical observation window is made up of terminal port flange, optical glass and glass gland, described terminal port flange is installed on observation port by hexagon socket head cap screw, optical glass is placed on terminal port flange, and glass gland is connected with terminal port flange by hexagon socket head cap screw after compressing optical glass；The middle part of described burning body is arranged above latter systems, and described latter systems is made up of atomizer flange, atomizer and atomizer gland, and atomizer flange is provided with the connecting hole for installing atomizer.
A diameter of 210mm of one of them optical glass described, a diameter of 180mm of the other three optical glass.
Described atomizer flange is made up of upper flange and lower flange.Described atomizer gland is connected with upper flange by hexagon socket head cap screw.
Described terminal port flange, glass gland and atomizer flange are stainless steel material.
Described casing is made up of upper box, lower box and case lid.What described upper box was symmetrical with on lower box is provided with the semicircular arc structure agreed with mutually with described observation port shape.
Compared with prior art, the technical solution of the utility model is had the benefit that
(1) burning body of the present utility model is provided with four observation ports being shaped as through hole, the axis of observation port is all in same level, angle between the axis of two of which observation port is 180 °, angle between the axis of two other observation port is 160 °, and observation port is provided with optical observation window；Change the structure layout design of conventional view window in constant volume burning body so that it is can with various modern advanced person's optical gauge with the use of, breach the limitation using optical measuring technique in constant volume combustion bomb body.So, the macroscopic form of injected fuel spray can be observed, the microscopic information of spraying can be obtained again, and by arranging synchronizing signal, can realize spraying macroscopic form and the synchro measure of microscopic information, be conducive to the broken atomization of fuel is further studied.
(2) during this utility model changes constant volume burning body, the physical dimension design of conventional view window, on the premise of three optical observation window sizes are identical wherein, increases the size of another one optical observation window；As such, it is possible to improve observation and the shooting effect of constant volume burning body, the data collection rate of optical gauge can be improved simultaneously, and then observed data and the measurement effect of experiment can be improved.
(3) this utility model is arranged above latter systems in the central authorities of burning body, and latter systems is made up of atomizer flange, atomizer and atomizer gland, and atomizer flange is provided with the connecting hole for installing atomizer.Make it can be by changing atomizer flange so that with the atomizer of different types of structure.In this manner it is achieved that the injection of multiple types fuel, and then the spray characteristics of multiple types fuel can be studied and contrasted.
Accompanying drawing explanation
Fig. 1 is this utility model burning body three dimensional structure schematic diagram.
Fig. 2 is the sectional structure schematic diagram of Fig. 1.
Fig. 3 is the structural representation of terminal port flange.
Fig. 4 is the sectional structure schematic diagram of terminal port flange.
Fig. 5 is the structural representation of glass gland.
Fig. 6 is the split status architecture schematic diagram of atomizer flange.
Fig. 7 is the sectional structure schematic diagram of lower flange in atomizer flange.
Fig. 8 is the structural representation of atomizer gland.
Fig. 9 is the three dimensional structure schematic diagram of upper box.
Figure 10 is the three dimensional structure schematic diagram of lower box.
Figure 11 is the three dimensional structure schematic diagram of case lid.
Reference: 1-optical observation window 2-optical observation window 3-optical observation window 4-optical observation window 5-terminal port flange 6-glass gland 7-lower flange 8-connecting hole 9-upper flange 10-bolt hole 11-atomizer gland 12-upper box 13-lower box 14-case lid
Detailed description of the invention
The utility model will be further described below in conjunction with the accompanying drawings:
A kind of CONSTANT VOLUME MODEL COMBUSTION CHAMBER studying spray discharge pattern and microscopic characteristics thereof, including the burning body being arranged on box house, as shown in Figure 1, it is provided with four observation ports being shaped as through hole on burning body, the axis of observation port is all in same level, angle between the axis of two of which observation port is 180 °, and the angle between the axis of two other observation port is 160 °；As shown in Figure 2, the most corresponding on observation port it is provided with optical observation window 1, optical observation window 2, optical observation window 3 and optical observation window 4, as shown in Fig. 3, Fig. 4 and Fig. 5, optical observation window is made up of terminal port flange 5, optical glass and glass gland 6, terminal port flange 5 is installed on observation port by hexagon socket head cap screw, optical glass is placed on terminal port flange 5, and glass gland 6 is connected with terminal port flange 5 by hexagon socket head cap screw after compressing optical glass；The diameter of the observation port at optical observation window 4 place is more than the diameter of other three observation ports, a diameter of 210mm of the optical glass being arranged in the present embodiment on optical observation window 4, the diameter being installed on the optical glass on optical observation window 1,2 and 3 is 180mm, highly purified quartz glass selected by optical glass, reason is that it has the highest deformation temperature and softening temperature, low-down thermal coefficient of expansion and thermal shock resistance, has the widest spectral transmission ability and relatively low dispersion phenomenon from infrared ray to ultraviolet.
The middle part of burning body offers through hole, the surrounding of through hole is provided with bolt hole, the outside of bolt hole is additionally provided with the connecting hole being connected with case lid 14, burning body is connected by bolt hole latter systems, latter systems is made up of atomizer flange, atomizer and atomizer gland 11, and atomizer flange is provided with the connecting hole 8 for installing atomizer；As shown in Fig. 6, Fig. 7 and Fig. 8, atomizer flange is made up of upper flange 9 and lower flange 7, the bolt hole 10 for being connected is offered with atomizer gland 11 on upper flange 9, when the atomizer of fuel injector stretches in firebomb body behind portion by connecting hole 8, atomizer gland 11 is passed through bolt and is connected with bolt hole 10 and compresses fuel injector.
The present embodiment middle port flange 5, glass gland 6 and atomizer flange all select stainless steel material, and because of its intensity, toughness height, thermal deformation is little, can reduce thickness and the volume of materials'use, thus increase the installing space of CONSTANT VOLUME MODEL COMBUSTION CHAMBER.Rustless steel is susceptible to the impact of corrosiveness of the fuel such as gasoline, ethanol simultaneously, can also save the work of rust cleaning and coating, thus improve materials processing precision.
The casing of this utility model device is divided into upper box 12, lower box 13 and case lid 14, as shown in Fig. 9,10,11, this casing is installed on the outside of burning body, what upper box 12 was symmetrical with on lower box 13 is provided with the semicircular arc structure agreed with mutually with observation port shape, also fill up asbestos between casing and burning body, serve the effect of insulation.
The following is and utilize this CONSTANT VOLUME MODEL COMBUSTION CHAMBER to carry out several specific embodiments tested:
Scheme one: for this CONSTANT VOLUME MODEL COMBUSTION CHAMBER, can use its optical observation window 1 and optical observation window 3 axis construction features on same straight line, coordinate with high-speed motion picture camera, the macro morphology of observation injected fuel spray.When using shadowing method to measure, with news lamp as background light source, place it in the orientation of optical observation window 1 correspondence, and it is adjusted to proper height and brightness, high-speed motion picture camera is placed in the orientation corresponding to optical observation window 3, by adjusting camera frame position and focal length, by demarcating, ensure, when fuel is spurted in burning body, each moment to be shot and spray the most clearly macro morphology figure.When starting to measure, use the mode synchronized, use delayed digital signal generator, after the initial point demarcating injection signal, every the pattern of shooting spraying of specific moment, until whole course of injection terminates.So, just can shoot each moment to spray the most clearly macro morphology figure.
Scheme two: for this CONSTANT VOLUME MODEL COMBUSTION CHAMBER, its optical observation window 2 and feature that optical observation window 3 axis angle is 90 ° can be used, coordinate with particle image velocimeter (PIV), the macro morphology of observation injected fuel spray and the velocity information of spray particle.Before measurement, the Nd:YAG generating laser of PIV system is placed in the orientation corresponding to optical observation window 2, and it is adjusted to proper height and intensity, CCD camera is placed in the orientation corresponding to optical observation window 3, by adjusting camera frame position and focal length, by demarcating, it is ensured that when fuel is spurted in burning body, can go out each moment and spray the most clearly macro morphology figure by sync pulse jamming, and measure the speed characteristics of spraying.During measurement, use the sheet light that Nd:YAG laser instrument sends as light source, use CCD camera to shoot, and store in a computer.Carrying out position setting owing to the most uniting PIV system and firebomb system, after fuel is spurted in burning body, the sheet light of Nd:YAG laser instrument illuminates spraying just along spraying centerline direction, and now, CCD camera is also exactly perpendicular to sheet bright finish and shoots.Owing to the frequency of laser instrument and CCD camera is relatively low, use the mode synchronized, use delayed digital signal generator, after the initial point demarcating injection signal, every the pattern of shooting spraying of specific moment, until whole course of injection terminates.So, just can shoot each moment and spray the most clearly macro morphology figure, and measure the speed characteristics of spraying.
Scheme three: for this CONSTANT VOLUME MODEL COMBUSTION CHAMBER, the architectural characteristic that axis angle is 70 ° of its optical observation window 3 and optical observation window 4 can be used, coordinate with Phase Doppler Particle Analyzer (PDA), measure the microscopic information of injected fuel spray, including particle diameter distributed intelligence and the velocity profile information of break up drops.Before measurement, dispose burning body, by corresponding with the transmitting probe position of PDA for the optical observation window 3 on burning body, control PDA frame of axes, allow laser center pass right through the axis of optical observation window 3, now, the receiving transducer of PDA is just corresponding with the optical observation window 4 of burning body, and both centrages are on same straight line, so, just can realize PDA and measure the function of spray particle microscopic characteristics.During measurement, first open laser instrument, and be adjusted to suitable intensity, by computer software control PDA frame of axes, laser measurement center is moved to spray orifice position, and is demarcated as initial point, afterwards laser measurement center is moved to the measurement point of Setup Experiments.Owing to having set burning body and the position of PDA, therefore in burning body spurted into by fuel and after opening PDA Survey Software, PDA is capable of the particle diameter to spray particle and tachometric survey function.When starting to measure, use the mode synchronized, use delayed digital signal generator, after the initial point demarcating injection signal, every the specific moment, the spray particle of spray field measurement point being measured, until getting the measure dot number that experiment needs, stopping spraying.So, just can measure the spraying microscopic characteristics of moment, including particle diameter distributed intelligence and the velocity profile information of spray particle.
Owing to the diameter of optical observation window 4 is greater compared with its excess-three window, therefore its with PDA with the use of time, PDA receiving transducer can obtain the information of more spray field, is favorably improved data collection rate, and then can improve observed data and the measurement effect of experiment.
Scheme four: for this CONSTANT VOLUME MODEL COMBUSTION CHAMBER, the architectural characteristic of its four optical observation windows can be used, coordinate with PDA and PIV simultaneously, and by arranging synchronizing signal, the macro morphology figure of injected fuel spray and the particle diameter distributed intelligence of spray particle and velocity profile information can be measured simultaneously.Before measurement, first dispose burning body, by corresponding with the transmitting probe position of PDA for the optical observation window 3 of burning body, control PDA frame of axes, allow laser center pass right through the axis of optical observation window 3, now, the receiving transducer of PDA is just corresponding with the optical observation window 4 of burning body, and both centrages are on same straight line, so, just can realize PDA and measure the function of spray particle microscopic characteristics.Then the Nd:YAG generating laser of PIV system is placed in the orientation corresponding to optical observation window 1, and it is adjusted to proper height, CCD camera is placed in the orientation corresponding to optical observation window 2, by adjusting camera frame position and focal length, by demarcating, it is ensured that can shoot, when fuel is spurted in burning body, picture of spraying the most clearly.The working method of PDA and PIV had described in scheme two and scheme three, repeated no more here.During measurement, the same mode using synchronization, use delayed digital signal generator, after the initial point demarcating injection signal, the pattern of PIV shooting spraying is made every the specific moment, the spray particle making PDA that spray field to be measured point every the specific moment measures, until getting the measure dot number that experiment needs, stops injection.So, just can go out each bundle spraying each moment macro morphology figure the most clearly by sync pulse jamming, and measure the microscopic characteristics of corresponding spraying moment, including particle diameter distributed intelligence and the velocity profile information of spray particle.
Scheme five: for this CONSTANT VOLUME MODEL COMBUSTION CHAMBER, the architectural characteristic of its four optical observation windows can be used, coordinate with PDA and high-speed motion picture camera simultaneously, and by arranging synchronizing signal, the macro morphology figure of injected fuel spray and the particle diameter distributed intelligence of spray particle and velocity profile information can be measured simultaneously.Before measurement, as described in scheme three, first dispose burning body, again high-powered LED lamp is placed in the orientation corresponding to optical observation window 1, high-speed motion picture camera is placed in the orientation corresponding to optical observation window 2, adjust height and the brightness of LED, adjust camera frame position and focal length, by demarcating, ensure when fuel is spurted in burning body, can go out each moment and spray the most clearly macro morphology figure by sync pulse jamming.For another example, described in scheme three, demarcate and measure initial point and PDA laser measurement center is moved to measurement point.When starting to measure, the same mode using synchronization, use delayed digital signal generator, after the initial point demarcating injection signal, the pattern of high-speed motion picture camera shooting spraying is made every the specific moment, the spray particle making PDA that spray field to be measured point every the specific moment measures, until getting the measure dot number that experiment needs, stops injection.So, just can go out each bundle spraying each moment macro morphology figure the most clearly by sync pulse jamming, and measure the microscopic characteristics of corresponding spraying moment, including particle diameter distributed intelligence and the velocity profile information of spray particle.
This utility model is not limited to embodiments described above.Description to detailed description of the invention is intended to describe and explanation the technical solution of the utility model above, and above-mentioned detailed description of the invention is only schematically, is not restrictive.In the case of without departing from this utility model objective and scope of the claimed protection, those of ordinary skill in the art it may also be made that the concrete conversion of a lot of form under enlightenment of the present utility model, within these belong to protection domain of the present utility model.
Claims (7)
1. the CONSTANT VOLUME MODEL COMBUSTION CHAMBER studying spray discharge pattern and microscopic characteristics thereof, including the burning body being arranged on box house, it is characterized in that, it is filled with the asbestos for insulation between described casing and burning body, described burning body is provided with four observation ports being shaped as through hole, the axis of described observation port all angles between same level, the axis of two of which observation port are 180 °, and the angle between the axis of two other observation port is 160 °；Optical observation window is installed on described observation port, described optical observation window is made up of terminal port flange, optical glass and glass gland, described terminal port flange is installed on observation port by hexagon socket head cap screw, optical glass is placed on terminal port flange, and glass gland is connected with terminal port flange by hexagon socket head cap screw after compressing optical glass；The middle part of described burning body is arranged above latter systems, and described latter systems is made up of atomizer flange, atomizer and atomizer gland, and atomizer flange is provided with the connecting hole for installing atomizer.
A kind of CONSTANT VOLUME MODEL COMBUSTION CHAMBER studying spray discharge pattern and microscopic characteristics thereof the most according to claim 1, it is characterised in that one of them a diameter of 210mm of described optical glass, a diameter of 180mm of the other three optical glass.
A kind of CONSTANT VOLUME MODEL COMBUSTION CHAMBER studying spray discharge pattern and microscopic characteristics thereof the most according to claim 1, it is characterised in that described atomizer flange is made up of upper flange and lower flange.
A kind of CONSTANT VOLUME MODEL COMBUSTION CHAMBER studying spray discharge pattern and microscopic characteristics thereof the most according to claim 3, it is characterised in that described atomizer gland is connected with described upper flange by hexagon socket head cap screw.
A kind of CONSTANT VOLUME MODEL COMBUSTION CHAMBER studying spray discharge pattern and microscopic characteristics thereof the most according to claim 1, it is characterised in that described terminal port flange, glass gland and atomizer flange are stainless steel material.
A kind of CONSTANT VOLUME MODEL COMBUSTION CHAMBER studying spray discharge pattern and microscopic characteristics thereof the most according to claim 1, it is characterised in that described casing is made up of upper box, lower box and case lid.
A kind of CONSTANT VOLUME MODEL COMBUSTION CHAMBER studying spray discharge pattern and microscopic characteristics thereof the most according to claim 6, it is characterised in that what described upper box was symmetrical with on lower box is provided with the semicircular arc structure agreed with mutually with described observation port shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521144616.2U CN205449505U (en) | 2015-12-31 | 2015-12-31 | Research spraying form and constant volume burner of microcosmic characteristic thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521144616.2U CN205449505U (en) | 2015-12-31 | 2015-12-31 | Research spraying form and constant volume burner of microcosmic characteristic thereof |
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| Publication Number | Publication Date |
|---|---|
| CN205449505U true CN205449505U (en) | 2016-08-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201521144616.2U Expired - Fee Related CN205449505U (en) | 2015-12-31 | 2015-12-31 | Research spraying form and constant volume burner of microcosmic characteristic thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105445033A (en) * | 2015-12-31 | 2016-03-30 | 天津大学 | Constant-volume burning device for studying spraying form and micro-characteristics of spraying form |
-
2015
- 2015-12-31 CN CN201521144616.2U patent/CN205449505U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105445033A (en) * | 2015-12-31 | 2016-03-30 | 天津大学 | Constant-volume burning device for studying spraying form and micro-characteristics of spraying form |
| CN105445033B (en) * | 2015-12-31 | 2018-12-04 | 天津大学 | A kind of CONSTANT VOLUME MODEL COMBUSTION CHAMBER for studying spray discharge pattern and its microscopic characteristics |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160810 Termination date: 20181231 |
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| CF01 | Termination of patent right due to non-payment of annual fee |